docs: update supported vue cli version

Author: ktsn

README.md

@@ -6,7 +6,7 @@ Vue CLI plugin that provides auto routing feature.
 
 ## Overview
 
-Ensure you are in a project generated by Vue CLI v3. You install this plugin by running the following command:
+Ensure you are in a project generated by Vue CLI >= v3. You install this plugin by running the following command:
 
 ```bash
 # If you did not install router plugin yet